Pump.



F. SUBRY.

PUMP.

APPLlcAImN FILED M^Y29,19\6.

Patented Apr. 17, 1917 2 SHEETS-SHEET I.

. ings,

PUMP.

i Specification of Letters Patent.

Patented Apr. 17, 1917,

Application filed May 29, 1916. Serial N o. lfwll.

To cZZ whom t may concern.'

Be it known that I, FRANK SUBRY, a subject of the King of Italy, residing in the city and county of Denvei` and State of Colorado, have invented certain new and useful Improvements in Pumps; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, refnrence being had to the accompanying drawand to the characters of reference marked thereon, which form a part of this specification.

My invention J,relates to improvements in the Jdouble action or 'continuous flow type, and my object is to present an apparatus of this character comprising a very small number of working parts, and

with thenntake one that is most eilicient in operation.

In carrying out my idea I employ a cylin-` der provided -with intake and discharge ports diametrically opposed to .each other, and a piston located within the said cylinder, the piston being composed of two parts, each part having a pair of grooves formed in its periphery, the' grooves in one 'of said parts ,adapted to alternately communicate ort., while thegrooves in the other part alterhatelyJ communicate with the discharge port as the piston is raised and lowered.

I also mount a cage upon the top of the cylinder, 'said cage being provided with cam surfaes which areengaged as the piston reciprocates by anti-frictional rollers carried by the pistonstem, Wher'ebythe aforesaid operation is accomplished. y l

Having briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an .embodiment thereof. In this drawing,-

Figure 1 is a view in elevation of my improved construction.

Fig. 2 is a section taken on the line 2-2, Fi 1, looking in the direction of the arrow.

Fig. 3 is a cross section taken on the line 3 4, Fig. LshOWiug one position of the piston. l v

Fig. i is a cross section also taken on the line 3mi, Fig. 1, showing another position Y of the piston.

- of the part 15.

taken on the line 5-5, Fig. 6.

Fig. l6 1s a cross on the line G-G, Flg. 5.

` f UNITED sTATEs PATENT oEEicE. l

section of the piston taken Fig. 7 is a central vertical section taken on the line 7*7, Fig. 3, showing the piston in its lowermost position.

Fig. 8 is a central vertical section taken on` n .the ine 8-8, Fig. 4, showing the piston in its uppermost position.

lilg. 9 is a detail View of thepiston andy lower extremity parts separated Fig;v 10 is fa elevation,

to show the construction. detail view of the piston in showing the grooves which conivmunicate with the discharge port of the cyl` luder. l. Fig. '11 is a view similar to Fig. 10, show,-A

ing the piston grooves which communicate with the intake port of the. cylinder.

The same reference characters indicate thej Let the numeral 5 designate a pump cylinc j laterally disposed flangesv The same parts in all the views.

der provided with 6 for securing the same in position. cylinder casing has' an intake opening 7 and a discharge opening 8 formed therein, and diametrica-lly opposed to each other, the intake opening 7 adapted to register with a pipe 9 and the discharge opening 8 with a pipe 10, the said pipes being connected with a casing as disclosed at 12.

Within the cylinder is located a piston 13 composed of two -parts 14 and 15 which are fitted together, the part 14 being recessed as shown at 16 to receive an offset portion 17 A piston stem Sis secured 1n the upper extremity of the piston between the two parts of the latter by means of a recofthe piston stem, with),l

tangular-shaped part 19 secured to its lower extremity and projecting laterally beyond the stem, the said part 19 adapted to fit withir. a recess 20l of counterpart] shape formed inthe part 14 of the piston, and bear upon the upper surface oit' the offset the portion 17 ot the part 15. one extremity of said springs` adapted to bear against the inner end ot the ret-ess lti ol the part ll.

Grooves A and l are formed in thc periphery of the part- 1l. and the periphery ot the part 1.5 is provided with grooves t and l). the grooves and l adapted to alternately eonnnunieate with the intake opening T, and the grooves C and l) adapted to alti rnat'ely eonnnunieate with the discharge opening S. ',l`he groove extends from the lower end oll the piston to a point near the upper extremity ol' the latter. while the groove ll extends trom the upper end ol" the said piston to a point near its lower extremity. the said grooves being arranged in parallel relation (see ["ig. ll). Also the groove C extends from the upper end ot" the piston to a point near the lower end otthe latter, the lower extremity ofthe said groove heilig eurved toward the groove l) which extends from the lower end ot' the said piston to a point near its upper end, the upper extremity ot this groove beingeurved toward the groove C. 'l`hesc grooves are also disposed parallel to each other (see Fig. lll).

A cage 2J: is mounted upon the cylinder head by means ot' bolts 2 and the piston stem 1S is adapted to projeet through and above said cage, a packing 2li and a packing nut :2T being employed to l'orni a water tight joint around thesaid stem where it passes through the e vlinder head.

A pin 2b is mounted in the piston stem 18. the extremities ol' `said pin being equipped with anti-lrietional rollers` ".ll adapted to engage the walls il() olE openings- :Sl t'ormcd in the eage ".Zl, the uppe' and lower walls of said openings being inelined as shown at 32 and 25:5 respectively, whereby they per-torni the function ol cams when engaged by the rollers 2S).

ln view oll the above description it is bef lieved that the use and operation ol' my improved eonstruetion will be readily understood. A\ssuming that tlnl piston is in the. position disclosed in Figs. Il and T. this being its lowermost limit ol' movement. the groove will be in eonnuunieation with the intake. opening T and the lower portion olI the cylinder chamber. and the groove (l will communicate with the discharge opening S and the. upper portion ol the said eylinder chamber. Now. as the piston travels upwardly llllid will be drawn into the lower portion of the cylinder l'rom the pipe Sl through the intalte opening Tand the groove 1\,and.at the same time the lluid in the upper portion ol' the said eylinder will be forced out of the latter through the groove the discharge opening S and the pipe ltl.

let'ore the piston l?) reaches its upward limit ol movement, the antil'rietional rollers 29 carried by the piston stem 1S, will engage BEST AVAlLABLE CO.

the lower end of the upper inclined wall portions :32, and, as the piston furthel aseends. the rollers will ride upwardly and laterally upon these said portions 32 until they reaeli the upper extremities of the latter, whereby the piston will be rotated to the position disclosed in Figs. 4 and 8. When the piston is in this position, the groove A is cut oll' from the intake opening 7 and the groove B placed in colinnunication therewith, and the groove C is cut; otll from the discharge opening S and the groove D placed in eonnnunieation with the same. The portion ol' the cylinder above the piston is now in eommnnication with the intake opening 7 and the portion below lthe piston is in conimunication with the discharge opening 8, whereby, as the said piston descends, lluid is drawn into the upper portion of the cylinder through the.pipe t), intake opening T and the groove l, and, at the same time the lluid in the lower portion of the cylinder is being discharged through the groove D, discharge opening S and the pipe 1t).

lelore the piston reaches its lowermost limit ol' movement, the anti-trictioinil roliers 2*.) will engage the upper ends of the lower inclined wall portions 33, and as the piston furtherfileseends. these rollers will ride downwardly and laterally upon the said wall portions until they reaeh the lower extremities ol' the latter` thereby rotating the piston back to the position disclosed in Fig. 7, this4 position being its lowermost limit ot movement.

lt should be noted that theupper and lower extremities ot' the grooves l) and C respectively. are curved. whereby one of the said grooves or both are continually iu connnunication with the discharge opening 8.

llaving thus described my invention, what I elaini is.-

l. ln a pump. the combination of a cylinder provided with intake and discharge;

ports. a piston loeated in said cylinder and having two sets ol' grooves formed therein, one groove ol eaeh .set extending from the bottom ol' the piston to a (point near its upper extremity. while the other groove extends l'rom the top ol' the piston to anpoiut near its lower extremity. and the upper ex lremity ol one groove and the lower extremity ol the other groove of one of said :sets being curved toward the adjacent groove, and means vl'or rotating the piston during its reeiproeation, l'or the purpose set forth.

ln a pumpe the combination of a cylinder. a piston located in the said cylinder and having grooves formed in its periphery, n member mounted upon top of the cylinder provided with open spaces in its oppositie sides. the upper and lower walls of said openings being respectively inclined in reverseI directions, ,and means carried by the posite extremities of said pin adapte-to en gage the said inclined walls during the recproca tion of the piston, for the purpose set forth. y n testimony whereof I aflx my signature, in presence of two witnesses.

' FRANK SUBRY.

Witnessesz 'i GRACE HUSTON, v

A. EBmT OBRmN. 

